CN115156161A - Electroplated part washing method and electroplating method - Google Patents
Electroplated part washing method and electroplating method Download PDFInfo
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- CN115156161A CN115156161A CN202110373219.6A CN202110373219A CN115156161A CN 115156161 A CN115156161 A CN 115156161A CN 202110373219 A CN202110373219 A CN 202110373219A CN 115156161 A CN115156161 A CN 115156161A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/14—Removing waste, e.g. labels, from cleaning liquid; Regenerating cleaning liquids
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
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Abstract
The embodiment of the invention provides a method for washing electroplated parts and an electroplating method, wherein the method for washing the electroplated parts comprises the steps of cleaning the electroplated parts in a washing unit; treating the cleaning liquid in the washing unit with an absorption unit comprising an electrodepositer; and acquiring information of the cleaning liquid, and controlling the electro-deposition device according to the information. The recovery process has the advantages of short route, less equipment investment and low metal refining cost, and can accurately control the quality of heavy metal in the electrodeposition process and realize the complete recovery of the heavy metal.
Description
Technical Field
The invention belongs to the technical field of industrial sewage treatment, and particularly relates to a method for washing an electroplated part and an electroplating method.
Background
The basic raw materials of electroplating are heavy metals such as nickel, copper, chromium, gold and the like, and the electroplating method is a typical high-energy-consumption and high-pollution industry. Due to the electroplating principle, the metals can not be completely changed into the required coatings, a considerable part of the metals can be changed into pollutants to be present in electroplating waste bath solution and rinsing water, and the metals can be partially gasified into harmful gases to form heavy metal pollution to the environment. As a basic industry in the industrial field, the electroplating industry discharges waste water which is one of important pollution sources suffering from the following problems.
Disclosure of Invention
The embodiment of the invention aims to provide a method for washing an electroplated part and an electroplating method.
Among the conventional methods, the treatment method for washing water for plating heavy metals includes: neutralization precipitation method, ion exchange method, cyclone electrodeposition and membrane filtration method. Wherein, the neutralization precipitation method comprises the following steps: when the concentration in the electroplating washing tank reaches the discharge concentration, water is discharged from the washing tank, and the heavy metal is precipitated by adding alkali, so that the water cannot be recycled and can only be discharged to a sewage station for treatment, and the sludge containing the heavy metal is neutralized and precipitated and needs to be handed to a unit with corresponding treatment qualification to recover the heavy metal, thereby increasing the extraction cost of the heavy metal and reducing the recovery rate of the heavy metal. Ion exchange method: the single ion exchange method needs more resin and is frequently regenerated due to high metal concentration in the washing water in the using process, heavy metal recycled by resin washing needs to be refined again, and the equipment investment and the cost for extracting the heavy metal are high. Heavy metal can be directly recovered by cyclone electrodeposition, but the heavy metal recovered by the conventional cyclone electrodeposition adopts a manual control method, the concentration of heavy metal ions is observed by naked eyes, and the startup and shutdown time is judged, so that the quality of the recovered heavy metal is unstable due to the increase of labor cost and inaccurate judgment. Problems with membrane filtration methods: the investment is large; the washing water can not be completely recycled; the concentrated high-concentration heavy metal liquid after membrane filtration needs to be refined again, so that the refining cost of the heavy metal is increased.
In order to solve the above problems, an embodiment of the present invention provides a method for washing a plated article, including: cleaning the plated item in a washing unit; treating the cleaning liquid in the washing unit with an absorption unit comprising an electrodepositer; and acquiring information of the cleaning liquid, and controlling the electro-deposition device according to the information.
Optionally, the washing unit includes a first washing tank, a second washing tank and a third washing tank, and the plated item is washed in the first washing tank, the second washing tank and the third washing tank in sequence; processing the cleaning liquid of the first washing tank by using the electro-deposition device, wherein the information of the cleaning liquid is the information of the cleaning liquid of the first washing tank; the absorption unit further includes a resin absorber with which the cleaning liquid of the second and third washing tanks is treated.
Optionally, the controlling the electro-deposition device according to the information includes: comparing the information of the washing liquid with threshold value information, and controlling the electro-deposition device according to the comparison result; the threshold information includes threshold information to turn on the electro-winning machine and threshold information to turn off the electro-winning machine.
Optionally, the comparing the information of the washing solution with the threshold information, and controlling the electro-deposition device according to the comparison result includes: shooting an image of a cleaning solution to be processed by using a camera as a first image; comparing the first image with a second image set corresponding to the threshold information for turning on the electro-integrator and/or a third image set corresponding to the threshold information for turning off the electro-integrator; and when the color of the first image is basically consistent with that of the second image group, the electro-deposition device is started, and when the color of the first image is basically consistent with that of the third image group, the electro-deposition device is closed.
Optionally, the method further comprises filtering the cleaning solution after being processed by the electro-deposition device.
Optionally, the method further comprises backwashing the resin absorber.
Optionally, the resin absorber is backwashed with 1mol/l dilute acid or 1mol/l alkali solution.
Correspondingly, the embodiment of the invention also provides an electroplating method, which is characterized by comprising the following steps: electroplating the piece to be plated in an electroplating bath to obtain an electroplated piece; and washing the electroplated part by using the electroplated part washing method.
Optionally, the method further comprises recovering backwash liquid produced by the washing process.
Through the technical scheme, the electroplated part washing method comprises the steps of cleaning an electroplated part in a washing unit; treating the cleaning liquid in the washing unit with an absorption unit comprising an electrodepositer; and acquiring information of the cleaning liquid, and controlling the electro-deposition device according to the information. Through obtaining the information automatic control electrodeposition ware of washing liquid, reduce the labour, and the quality of accurate control electrodeposition in-process heavy metal, compare traditional approach, recovery technology route section is short, and the equipment investment is few.
Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention without limiting the embodiments of the invention. In the drawings:
FIG. 1 is a schematic view of a plated item washing apparatus used in the method of the present invention;
FIG. 2 is a schematic view of a plated item washing apparatus according to an embodiment of the present invention and its operation flow;
FIG. 3 is a flowchart of a plated item washing method of the present invention.
Description of the reference numerals
200 electroplating bath 201 recovery tank
202 first washing tank 203 second washing tank
204 third washing tank 205 information acquisition unit
206 first electro-deposition device 207 second electro-deposition device
208 first filter 209 second filter
210 first resin absorber 211 second resin absorber
212 213 first pump of 1mol/l dilute acid or alkali liquor
214 second pump 215 first ball valve
216 second ball valve 217 third ball valve
218 fourth ball valve
Detailed Description
The following describes in detail embodiments of the present invention with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.
The electroplating sludge is a dangerous solid waste produced in the electroplating wastewater treatment process, has complex components and contains a large amount of heavy metals such as nickel, copper, chromium, zinc, silver and the like. In the prior art, the treatment process flow of heavy metals is complex, the metal recovery rate is low, the processing cost is high, and secondary pollution is easy to generate.
FIG. 1 is a schematic view of a plated item washing apparatus used in the method of the present invention. As shown in FIG. 1, the plated item washing apparatus is shown to include a washing unit 104, an absorption unit 103, an information acquisition unit 102, and a controller 101. The information acquisition unit 102 is configured to acquire information of the cleaning liquid; the controller 101 is configured to control the electrodeposition device according to the information of the cleaning solution.
The washing unit 104 is used to wash plated items. Preferably, the washing unit 104 includes a first washing bath, a second washing bath, and a third washing bath for sequentially washing the plated items. The washing tank may further include a greater number of washing tanks, such as a fourth washing tank, a fifth washing tank, and the like.
The absorption unit 103 is used for processing the cleaning liquid in the washing unit 104, and the absorption unit 103 comprises an electro-deposition device. The electro-deposition device is preferably cyclone electro-deposition, and the working principle of the cyclone electro-deposition is that liquid phase mass transfer is enhanced through the circulating flow of electrolyte, concentration difference polarization is effectively eliminated, and the separation technology for efficiently and selectively extracting target metal from low-concentration complex solution is realized. Compared with the traditional separation technology, the cyclone electrodeposition has the characteristics of short process flow, less reagent consumption, high product quality and the like, and can directly recover heavy metals. The electro-deposition device is used for processing the cleaning liquid in the first washing tank, and the cleaning liquid in the first washing tank is cleaned in a self-circulation mode, so that water balance is guaranteed. The absorption unit 103 further comprises a resin absorber for recovering heavy metals by an ion exchange process. The resin absorber is used for treating the cleaning liquid of the second washing tank and the third washing tank. The cleaning liquid passing through the second washing tank of the resin absorber flows to the third washing tank, the third washing tank continuously replenishes the liquid lost by the second washing tank, and the second washing tank and the third washing tank form a circulating body, so that the indirect cleaning of the cleaning liquid in the third washing tank is realized.
According to a preferred embodiment, the absorption unit 103 is provided with two of the electrodepositer, the filter and two of the resin absorbers in order to achieve a more complete absorption of the metal in the washing liquid. The electro-deposition device automatically recovers heavy metal in the first washing tank to maintain the concentration of metal ions below 0.5g/l, the resin absorber recovers trace heavy metal in the second washing tank and the third washing tank to make metal ions in the washing water in the second washing tank and the third washing tank reach below 1mg/l, and the method does not bring any other impurities into the washing tanks, and makes the washing water recycled, reduces water consumption and saves water resources. The filter is a filter bag with the density of 1 mu, and is arranged behind the electrodepositer to filter the cleaning liquid treated by the electrodepositer, so that any physical impurities can not enter the washing tank, and the quality of the electroplated product is ensured.
The information acquiring unit 102 is configured to acquire information of the cleaning liquid of the first washing tank. The controller 101 is configured to control the electrodepositer according to the information of the cleaning solution, and the controller includes a processor configured to control at least the opening and closing of the electrodepositer and to control the opening of other switches (e.g., pumps and valves). The method comprises the following steps: controlling the electro-deposition device according to the comparison result of the information of the cleaning liquid of the first washing tank and the threshold value information; the threshold information includes threshold information to turn on the electro-winning machine and threshold information to turn off the electro-winning machine. The information acquiring unit 102 is a camera, the camera is used for shooting a first image of a cleaning fluid to be processed, the controller 101 stores a second image group corresponding to the threshold information for opening the electro-deposition device and/or a third image group corresponding to the threshold information for closing the electro-deposition device, the controller compares the first image with the second image group and/or the third image group, when the color of the first image is substantially consistent with that of the second image group, the electro-deposition device is opened, and when the color of the first image is substantially consistent with that of the third image group, the electro-deposition device is closed. Preferably, the second image group is not less than one frame of image corresponding to the threshold information for turning on the electro-deposition device, the third image group is not less than one frame of image corresponding to the threshold information for turning off the electro-deposition device, and the second image group and the third image group are both acquired through big data acquisition.
According to a preferred embodiment, at least one frame of image with the metal ion concentration (preferably 2 g/l) required for turning on the electro-deposition device to recover heavy metals is collected as a second image group, and at least one frame of image with the metal ion concentration (preferably 0.5 g/l) required for turning off the electro-deposition device to recover heavy metals is collected as a third image group, and the second image group and the third image group are stored in the controller 101. Adopting a high-definition camera to shoot liquid in the electroplating heavy metal washing tank, then transmitting the liquid to the controller 101, and automatically starting a heavy metal recovery process by the electro-deposition device when the color of an image shot by the camera is consistent with the color of a starting image group stored in the controller in advance; when the color of the image shot by the camera is consistent with the color of the shutdown image group stored in the controller in advance, the electro-deposition device automatically shuts down the process of recovering the heavy metal, so that the aims of saving labor and accurately controlling are fulfilled.
The controller comprises a processor and a memory, wherein the processor is used for controlling the on and off of the electro-deposition device, can comprise a single chip microcomputer and a chip and is used for executing all or part of the steps of the method in the embodiments of the application, for example, the information acquisition unit is controlled to acquire picture information, the pump and the ball valve are operated according to the picture information and/or the instruction of an operator, and the like. The memory is used for storing the acquired image maps (the second image group, the third image group and the like), the compiled codes and the like.
FIG. 2 is a schematic view of a plated item washing apparatus according to an embodiment of the present invention and its operation. As shown in FIG. 2, the electroplated parts pass through the recovery tank 201 from the electroplating tank 200, and then sequentially enter the first washing tank 202, the first washing tank 203 and the first washing tank 204, so as to rinse the surface of the workpiece. The flow direction of the cleaning liquid is as follows: the washing liquid in the first washing tank 202 is self-circulated to clean, so that the water balance of the first washing tank 202 is ensured, the washing liquid in the second washing tank 203 flows to the third washing tank 204, the third washing tank 204 continuously replenishes the liquid lost in the second washing tank, and the second washing tank 203 and the third washing tank 204 form a circulating body, so that the indirect cleaning of the washing liquid in the third washing tank 204 is realized. The device also comprises a filter (preferably a 2-grade filter with the density of 1 mu) for filtering the cleaning liquid treated by the electro-deposition device. For example, in the rinsing process of copper-plated workpieces, the workpieces carry copper plating solution to the recovery tank 201, when the workpieces are washed from the recovery tank 201 to the first washing tank 202, the workpieces carry the solution in the recovery tank to the first washing tank 202, when the workpieces are washed from the first washing tank 202 to the second washing tank 203, the workpieces carry the cleaning solution in the first washing tank 202 to the second washing tank 203, and when the workpieces are washed from the second washing tank 203 to the third washing tank 204, the cleaning solution in the second washing tank 203 is carried to the third washing tank 204.
When the concentration of the metal ions in the first washing tank 202 is relatively high, the requirement of the cyclone electrodeposition is met, and the metal in the first washing tank 202 is directly recovered by the cyclone electrodeposition. Since the work is washed by the counter current, the metal ion concentration in the second washing tank 203 and the third washing tank 204 is low, and direct recovery (such as recovery by the electrodeposition rotational flow method) is not economical, so that the metal in the second washing tank 203 and the third washing tank 204 is recovered by resin ion exchange.
When the first pump 213 is started, the metal-containing solution in the first washing tank 202 is recovered by adopting rotational flow electrodeposition to electrodeposit metal ions into metal, the metal in the first washing tank 202 passes through the first electrodepositer 206 and the second electrodepositer 207 in sequence, and the cleaning solution after metal electrodeposition is filtered by 2-stage filters (the first filter 208 and the second filter 209) with the density of 1 mu to return to the first washing tank 202, so that the electroplated workpiece is continuously washed, and the purposes of recycling washing water and saving water are achieved.
Because the concentration of the metal in the first washing tank 202 is always controlled within a very low range by electrodepositing the liquid in the first washing tank 202, the content of the heavy metal in the second washing tank 203 and the third washing tank 204 is very low (the concentration of the metal in the second washing tank 203 is below 0.05 gram per liter, and the color of the metal ion can not be basically seen by the third washing tank 204), in order to ensure the washing effect of the electroplated workpiece, the second washing tank 203 and the third washing tank 204 adopt resin to absorb the heavy metal, so that the content of the heavy metal in the third washing tank 204 is always lower than 0.5mg/l, thereby achieving the purposes of no discharge of washing water and water saving. For example, the specific operation method is as follows:
A. the information acquisition unit 205 acquires liquid color information of the first washing tank 202, and controls the electro-deposition device according to a comparison result of the information of the cleaning liquid of the first washing tank 202 and the threshold value information; the threshold information includes threshold information to turn on the electro-winning machine and threshold information to turn off the electro-winning machine. The method comprises the steps that a first image of cleaning liquid to be processed is shot through a camera, a second image group corresponding to threshold information for opening the electro-deposition device and/or a third image group corresponding to threshold information for closing the electro-deposition device are stored in a controller, the first image is compared with the second image group and/or the third image group through the controller, when the color of the first image is basically consistent with that of the second image group, the electro-deposition device is opened, and when the color of the first image is basically consistent with that of the third image group, the electro-deposition device is closed.
When the liquid metal concentration of the first washing tank 202 reaches the startup concentration, the controller will turn on the first pump 213 and the switch of the electrodeposition system (including the first electrodeposition device 206, the second electrodeposition device 207 and the power supply), and the first pump 213 sends the cleaning liquid of the first washing tank 202 to pass through the first electrodeposition device 206 and the second electrodeposition device 207 of the electrodeposition system in sequence, and through the rotational flow electrodeposition, metal ions are electrodeposited into metal simple substances which are deposited on the cathodes of the electrodeposition barrels of the first electrodeposition device 206 and the second electrodeposition device 207, so that the metal ion concentration in the liquid is reduced.
B. The liquid after electrodeposition is directly returned to the first washing tank 202 through the first filter 208 and the second filter 209 in this order. The metal ion concentration in the first washing tank is ensured to be in a relatively low range, and the purpose of recycling the cleaning liquid in the first washing tank is achieved.
C. The metal recovery process in the second and third washing tanks 203 and 204 is: the first ball valve 215 and the third ball valve 217 are opened, the second ball valve 216 and the fourth ball valve 218 are closed, then the second pump 214 is started, so that the cleaning liquid in the second washing tank 203 and the third washing tank 204 passes through the first resin absorber 210 and the second resin absorber 211 in sequence under the conveying of the second pump 214, and the metal ions in the cleaning liquid are recovered by the first resin absorber 210 and the second resin absorber 211. The ball valve may be replaced by another valve or switch and the pump may be a switch for delivering liquid.
D. Regeneration of resin (backwash metal ion): the resin absorber further comprises a dilute acid or alkali solution storage tank, and the dilute acid or alkali solution is used for backwashing the resin absorber. After the first resin absorber 210 and the second resin absorber 211 fully absorb the metal ions, the first ball valve 215 and the third ball valve 217 are manually closed or automatically closed by a controller, the second ball valve 216 and the fourth ball valve 218 are opened, the second pump 214 is started, the cleaning solution in the second washing tank is sent to the first resin absorber 1 and the second resin absorber 2 through the second pump 214, and the metal ions in the resin are backwashed and sent to a plating tank or a recovery tank for utilization. The dilute acid or alkali solution can be dilute sulfuric acid or sodium hydroxide solution with certain concentration and is used for backwashing metal ions in the resin.
FIG. 3 is a flowchart of a plated item washing method of the present invention. Cleaning the plated item in a washing unit; treating the cleaning liquid in the washing unit with an absorption unit comprising an electrodepositer; and acquiring information of the cleaning liquid, and controlling the electro-deposition device according to the information.
As shown in fig. 3, in step S301, information of the cleaning solution is acquired, and the information of the cleaning solution is information of the cleaning solution of the first washing tank.
Step S302, controlling an electrodepositer according to the information, comparing the information of the cleaning liquid of the first washing tank with threshold value information, and controlling the electrodepositer according to the comparison result; the threshold information includes threshold information to turn on the electro-winning machine and threshold information to turn off the electro-winning machine.
Step S303 is that an electro-deposition device processes the cleaning liquid in the washing unit, the image of the cleaning liquid to be processed is taken as a first image according to a camera, the threshold information for starting the electro-deposition device is corresponding to a second image group, the threshold information for closing the electro-deposition device is corresponding to a third image group, the first image is compared with the second image group and/or the third image group, when the color of the first image is basically consistent with the second image group, the electro-deposition device is started, and when the color of the first image is basically consistent with the third image group, the electro-deposition device is closed.
Preferably, the washing unit includes a first washing tank, a second washing tank and a third washing tank, and the plated items are washed in the first washing tank, the second washing tank and the third washing tank in sequence; processing the cleaning liquid of the first washing tank by using the electro-deposition device, wherein the information of the cleaning liquid is the information of the cleaning liquid of the first washing tank; the absorption unit further includes a resin absorber with which the cleaning liquid of the second and third washing tanks is treated. The controlling the electro-deposition device according to the information includes: comparing the information of the cleaning liquid with threshold information, and controlling the electro-deposition device according to a comparison result; the threshold information includes threshold information to turn on the electro-winning machine and threshold information to turn off the electro-winning machine. The comparing the information of the cleaning liquid with the threshold information and controlling the electro-deposition device according to the comparison result comprises: shooting an image of a cleaning solution to be processed by using a camera as a first image; comparing the first image with a second image set and/or a third image set, the second image set corresponding to the threshold information for turning on the electro-deposition device, the third image set corresponding to the threshold information for turning off the electro-deposition device; and when the color of the first image is basically consistent with that of the second image group, the electro-deposition device is started, and when the color of the first image is basically consistent with that of the third image group, the electro-deposition device is closed.
The method adopts the cyclone electrodeposition to recover heavy metals in the electroplating washing tank, and the resin recovers trace metals in the cleaning solution, so that the washing water can be recycled for a long time.
The traditional process discharges rinsing wastewater to a sewage station, the chemical method has high sewage treatment cost and the generated sludge treatment cost is high. The invention adopts the camera to identify the color of the heavy metal electro-deposition liquid with different concentrations in the electroplating washing tank to automatically control the start and stop of the electro-deposition process, reduces the labor force, accurately controls the quality of the heavy metal in the electro-deposition process, and is matched with the resin to absorb a small amount of heavy metal ions after electro-deposition. Compared with the traditional method, the invention has the advantages of short recovery process route, less equipment investment and low metal refining cost, and achieves the aims of complete recovery of heavy metals and complete recycling of washing water.
The embodiment of the invention also provides an electroplating method, which is characterized by comprising the following steps: electroplating a piece to be plated in an electroplating bath to obtain an electroplated piece; the above-mentioned plated article washing method washes the plated article. The method further comprises recovering a backwash liquid generated during the washing method, which is added to the plating tank or the recovery tank, according to the plated article. The electroplating method provided by the invention can be used for any electroplating process, such as electroplating of heavy metals such as nickel, copper, chromium, gold and the like. For details and effects of the foregoing embodiments, detailed descriptions are omitted here.
Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the embodiments of the present invention within the technical idea of the embodiments of the present invention, and these simple modifications all belong to the protection scope of the embodiments of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the embodiments of the present invention do not describe every possible combination.
Those skilled in the art will understand that all or part of the steps in the method according to the above embodiments may be implemented by a program, which is stored in a storage medium and includes several instructions to enable a single chip, a chip, or a processor (processor) to execute all or part of the steps in the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk, and various media capable of storing program codes.
In addition, any combination of various different implementation manners of the embodiments of the present invention is also possible, and the embodiments of the present invention should be considered as disclosed in the embodiments of the present invention as long as the combination does not depart from the spirit of the embodiments of the present invention.
Claims (9)
1. A plated item washing method, comprising:
cleaning the plated item in a washing unit;
treating the cleaning liquid in the washing unit with an absorption unit comprising an electrodepositer;
and acquiring information of the cleaning liquid, and controlling the electro-deposition device according to the information.
2. The method of claim 1,
the washing unit comprises a first washing tank, a second washing tank and a third washing tank, and the electroplated part is washed in the first washing tank, the second washing tank and the third washing tank in sequence;
processing the cleaning liquid of the first washing tank by using the electro-deposition device, wherein the information of the cleaning liquid is the information of the cleaning liquid of the first washing tank;
the absorption unit further includes a resin absorber with which the cleaning liquid of the second and third washing tanks is treated.
3. The method of claim 1 or 2, wherein said controlling said electro-deposition device based on said information comprises:
comparing the information of the washing liquid with threshold value information, and controlling the electro-deposition device according to the comparison result;
the threshold information includes threshold information to turn on the electro-winning machine and threshold information to turn off the electro-winning machine.
4. The method of claim 3, wherein comparing the information of the wash solution to threshold information and controlling the electro-deposition device based on the comparison comprises:
shooting an image of cleaning fluid to be processed by using a camera as a first image;
comparing the first image with a second image set corresponding to the threshold information for turning on the electro-integrator and/or a third image set corresponding to the threshold information for turning off the electro-integrator;
and when the color of the first image is basically consistent with that of the second image group, the electro-integrator is started, and when the color of the first image is basically consistent with that of the third image group, the electro-integrator is closed.
5. The method of claim 1, further comprising filtering the cleaning solution after the treatment of the electro-winning cell.
6. The method of claim 2, further comprising backwashing the resin absorber.
7. The method of claim 6,
and backwashing the resin absorber by using 1mol/l of dilute acid or 1mol/l of alkali liquor.
8. An electroplating method, comprising:
electroplating the piece to be plated in an electroplating bath to obtain an electroplated piece;
washing the plated by the plated washing method according to any one of claims 1 to 7.
9. The method of claim 8, further comprising recovering backwash liquid generated by the washing process.
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